Why is a call to action (CTA) not allowed in the custom image of a display ad with e-commerce creative?

The custom image in a display ad with e-commerce creative should not duplicate information already present in the e-commerce section (e.g., product title, price, star rating, CTA button). This is because the e-commerce creative automatically generates these elements, and redundant information can make the ad appear cluttered or unprofessional, reducing its effectiveness. The custom image is intended to showcase the product visually and creatively, complementing the e-commerce details rather than repeating them. CTAs are generally allowed in display ads and off-Amazon ads, as long as they adhere to platform guidelines and are not redundant.